Water Line Diagram & Terry Love question on YOUTUBE!

I have been lurking over at John Bridge's website on tiling and bathrooms. They sent me over here for my plumbing questions. This will be a 2 part question. 1.) Supply Lines (Picture) 2.)Waste/Vents (video).

Supply Lines: My main concern here is water pressure in the shower. I have 3/4" lines in which everything T's off of going to 1/2". Will this be ok?

Waste/Vents: I made a video for you guys Please try to follow along and let me know your thoughts! Remember, this stuff isn't glued together yet!
[video=youtube;k73pJfNBwbc]http://www.youtube.com/watch?v=k73pJfNBwbc[/video]

I stoppedl watching as soon as you got to the 4x3 REDUCER. Everything past that point would be improper. The pipe size depends on your local code, here the pipe can only be 6' long before you have to connect a vent to it. It amazes me how "everybody" thinks all you need is some pipe and a little advice from the Internet and anyone can become a plumber.

I stoppedl watching as soon as you got to the 4x3 REDUCER. Everything past that point would be improper. The pipe size depends on your local code, here the pipe can only be 6' long before you have to connect a vent to it. It amazes me how "everybody" thinks all you need is some pipe and a little advice from the Internet and anyone can become a plumber.

Click to expand...

That's how I learned to be a master plumber; or was that a baiter (you know, for fishing)

I have learned far more complex things off of the internet, rebuilding engine for example. I'm not saying that plumbing isn't complex, and there are a lot of "rules" that I am trying to learn.

I removed the 4" toilet drain and will change it to 3" tonight with a 2" vent about 5 feet away. Will this be sufficient for a 10' run? Sorry for the rookie mistake on the reducer!!! Rather than a closet elbow, I am going to use to two 45degree elbows coming out of it as I need the pipe to drop immediately.

The 3" toilet line needs a 2" vent within six feet. If you have a lav, that could be used as a wet vent for the toilet.
The shower vent is done wrong. Vents take off above the pipe line, not below.
Santees can be used on the vertical, but not horizontal in most places. To pass an inspection, it's best to use a combo or wye fitting on it's back.

quote; Rather than a closet elbow, I am going to use to two 45degree elbows coming out of it as I need the pipe to drop immediately

I am not sure what that means, but I get the impression that your pipe is going to do something it is not supposed to until AFTER it reaches the vent. If the vent is 5' away, then you have a 5' run NOT a 10' run. The pipe after the vent is irrelevent. I am impressed that you learned how to rebuild an automobile engine with just the Internet. Most people would need more than that.

I have learned far more complex things off of the internet, rebuilding engine for example. I'm not saying that plumbing isn't complex, and there are a lot of "rules" that I am trying to learn.

I removed the 4" toilet drain and will change it to 3" tonight with a 2" vent about 5 feet away. Will this be sufficient for a 10' run? Sorry for the rookie mistake on the reducer!!! Rather than a closet elbow, I am going to use to two 45degree elbows coming out of it as I need the pipe to drop immediately.